Herm Sprenger - Stainless Steel Prong Collar w/ Center-Plate & Assembly Chain

The workhorse ULTRA-PLUS prong training collar in corrosion-resistant stainless steel — built for all-weather training and everyday use.
Center plate keeps the prongs positioned away from the dog's sensitive throat area
Martingale-style assembly chain limits pull and distributes pressure evenly
Adjust the fit by adding or removing links; sits high on the neck, just behind the ears
Sizes: 2.25mm × 16" and 3.2mm × 23"
Made in Germany by Herm. Sprenger, metalworkers since 1872